DEC <2 1898 
KANSAS UNIVERSITY QUARTERLY. 
Wor: VET OCTOBER, 1898. Nong: 
some Notes on the Genus Saurodon and 
Alhed Species. 
Contribution from the Paleontological Laboratory No. 34. 
BY ALBAN STEWART. 
? 
sd 
» With Plates XIV, XV, XVI. 
In the year 1824, Dr. Harlan* described the genus Saurocephalus 
from a fragment of a superior maxilla collected by Lewis and Clark 
in their expedition up the Missouri river in 1804. Six years later, 
Dr. Hays¥ described the jaws and a portion of the skull of a second 
form Saurodon leanus, from the Marl of New Jersey. He also 
examined the specimen described by Dr. Harlan and found ‘‘that 
the teeth, instead of being ‘in a longitudinal groove’ ‘in close con- 
tact throughout’ ‘there being no distinct alveoli,’ are in fact placed 
in distinct alveolt.””"} Dr. Hays then reached the conclusion that 
the two genera were synonymous, and that since Dr. Harlan’s 
genus was founded upon erroneous characters, the name Saurodon 
should take precedence over it. In the year 1856, Dr. Leidy 
redescribed both of the above genera in a paper read before the 
American Philosophical Society,|| and as there had been nothing 
new added to the knowledge of them in America up to that time, 
concluded that the name Saurodon should be abandoned, and that 
the type of this species should be known as Saurocephalus leanus 
Hays. Nothing further was done regarding either of the generic 
*Jour. Acad. Nat. Sc., Phila., (830, vol. iii. p. 331. 
+Trans. Am. Phil. Soc.. vol. iii, p. 471. 
+L. c. p. 476. 
ITrans. Am- Phil. Soc., vol. xi. p. 91. 
> 
(177) KAN. UNIV. QUAR., VOL. VII, NO., 4 OCT., 1898, SERIES A. 
